Whitehall is a road in the City of Westminster, in central London, which forms the first part of the A3212 road from Trafalgar Square to Chelsea. It is the main thoroughfare running south from the site of the original Charing Cross at the southern end of Trafalgar Square towards Parliament Square. Recognised as the centre of Her Majesty's Government, the street is lined with government departments and ministries; the name "Whitehall" is thus also frequently used as a metonym for overall British governmental administration, as well as being a geographic name for the surrounding area.
The name is taken from the vast Palace of Whitehall that used to occupy the area but which was largely destroyed by fire in 1698. Whitehall was originally a wide road that led to the front of the palace. Trafalgar Square was built at its northern extremity in the early 19th century. The southernmost portion between Parliament Square and Downing Street is named Parliament Street. Combined, the streets cover a total distance of about 0.6 mile (1 km).